Improvement in gang-plows



"UNITED STATES PAT NT OFFICE.

THOMAS RICHARDSON AND MALCOLM MGINNES, OF FERGUS, CANADA.

IMPROVEMENT, IN GANG-PLOW S.

Specification forming part of Letters Patent No. 1 77,078, dated May 9,1876; application filed March 13, 1876.

To all whom it may concern Be it known that we, THoMAs RICHARDSON,

manufacturer, and MALCOLM MCINNES, black-' smith, of the village ofFergus, in the county of Wellington, Province of Ontario, Canada, haveinvented Improvements in Gang-Flows, of which the following is aspecification:

The object of our invention is to provide a light and strong gang-plow,in which the depth of the furrow can be easily regulated, and consistsof four wrought-iron plates, shaped and bolted together, as hereafterspecified, and provided with handles of the usual shape; also, theapplication of a handlever and quadrant, connected to and operating bymeans of rods and levers the wheels of the plow, as hereafter specified.

Figure I is an elevation. Fig. II is a plan. Fig. III is a detail ofplow.

A is the center rail of the frame, bent at its back end, as shown, so asto meet the side rail B, to which it is bolted by the two bolts C and D.The flat neck of the back plow E fits in between these two plates orrails, and is held therein by the two bolts C and D. The other plows Fand G have similar flat necks, and are likewise placed and held by thebolts H H and I I, which, respectively, hold the rails A and J to thebrace K, as shown. L is the front axle, passing through the rails J andA, and cranked, as shown, the wheel L being pivoted upon the short armof the crank, as

shown. The hind wheel M is attached in a similar manner to the frame,its axle M being the same shape as L, but passing'through the rails Band A. N is a hand-lever, the bottom end of which is fastened to theaxle M. O is a notched quadrant, bolted to the center rails A. P is abell-crank, pivoted, as shown, to the quadrant O. Q is a rod, connectingthe lever N to the bell-crank P. R is the rod connecting the saidbell-crank to the crank S, which is fastened to the axle L,--as shown.The holes 'the frame ofthe gang-plow, as shown.

marked 7' in the bell-crank P are for the purpose of shortening theconnection between the said bell-crank and crank S. T is thedraft-plate, bolted to and forming a bridge between the rails A and J,as shown. V V are the handles of the plow, bolted and stayed to Owing tothe connection described between the handlever N and cranked axles L andM, any motion of the former correspondingly affects the position of thelatter; but the relative position. to each other of the wheels L and Mdepends upon the position of the hand-lever N, and in which of the holes1" the end oftherod It may at the time be placed. In the drawings thehandlever N is in the lowest notch of the quadrant O, acting upon andcausing the wheels L and M to support the plows E, F, and G clear of theground. By placing the hand-lever N at the center notch of" the quadrantO, the wheels L and M would assume the position shown by dotted lines.By the arrangement for the adjustment of the wheels L and M, the depthof the furrows can be easily regulated.

We claim as our invention- 1. The frame of a gang-plow, composed of therails A, B, and J and brace K, in combination with the clevis-block Tand the plowstandard E, F, and G, having shoulders and fiat shanks, asshown and described.

2. The bell-crank P, having holes 10 pierced in one of its arms, asshown, and connected to the cranked axle L by the rod R and lever S, incombination with the rod Q, quadrant O, hand lever N, and cranked axleM, ar-

ranged and operated substantially as and for the purpose specified.

THOMAS RICHARDSON. MALCOLM MGIN N ES.

Witnesses HARRY VINCENT, W. D. W. PE'rRIE.

